Self charging battery

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Grumble
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Self charging battery

Post by Grumble » Tue Feb 25, 2020 10:59 pm

Apologies for what I suspect to be a misleading headline, but it’s not mine. However I’m not sure what they do mean exactly. Does anyone here have access to Applied Physics Reviews?
https://scienmag.com/simple-self-chargi ... r-devices/
I could squeeze my lemon till my blues went away, if I had possession over pancake day

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shpalman
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Re: Self charging battery

Post by shpalman » Wed Feb 26, 2020 8:57 am

Grumble wrote:
Tue Feb 25, 2020 10:59 pm
Apologies for what I suspect to be a misleading headline, but it’s not mine. However I’m not sure what they do mean exactly. Does anyone here have access to Applied Physics Reviews?
https://scienmag.com/simple-self-chargi ... r-devices/
Yes.

I'll have a read but it's generally a reputable journal, or at least AIP is a reputable publisher.

It's at https://aip.scitation.org/doi/10.1063/1.5132841 for anyone else who'd like a direct link.
molto tricky

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dyqik
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Re: Self charging battery

Post by dyqik » Wed Feb 26, 2020 1:24 pm

From a brief skim before coffee, it's a battery* which has negative resistance and capacitance at certain charge states. That means when included in a circuit, that circuit can become unstable, and if current is available, it will draw charge into itself, without any significant voltage being applied on average.

Practically, think of something based on it as being like a self-winding mechanical watch, where some external motion winds a spring. Here, some external charge randomly induced in the circuit by e.g. low frequency magnetic pickup, random electrothermal effects etc. could charge the battery.

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Pucksoppet
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Re: Self charging battery

Post by Pucksoppet » Wed Feb 26, 2020 1:57 pm

On the novel battery technology front, it is good to see Hydro-Québec backing John B. Goodenough and Maria Helene Braga's solid-state electrolyte battery.

https://news.hydroquebec.com/en/press-r ... ena-braga/

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